Container Ship Stacking Weight Modification Allows More Cargo

Press Release
Wednesday, October 17, 2012

Advanced research and development by Lloyd's Register indicates that container stacking weights can be modified to allow the carriage of more cargo.

In an 18,000 teu design the increase in cargo weight could be as much as 10%, says Tom Boardley Lloyd’s Register’s Marine Director. The benefits are lower costs, lower emissions and a lower carbon footprint.

Commentary from Tom Boardley: "The results come from looking hard at ship efficiency – how can we optimise designs? Clearly there has been scepticism over many ship efficiency claims and much of the problem comes down to lack of common approaches to measurement, so you end up comparing apples with oranges. But the work that we have been doing in examining the forces involved in container stacks is throwing up some really interesting and innovative results.

These results indicate clearly that we will be able to allow much higher cargo weights and enable more operational flexibility – and to do this in safety. The potential in cargo increase is considerable. 
I must emphasise the safety element here. We are helping the owners reduce risks and further reduce uncertainties in container stowage planning and operations. We have been carrying out a broad range of investigation and re-formulation of calculations into operational ship accelerations and ship motions. This is not just mathematics – real containers have been load tested at full scale and ships have been instrumented; we have been modelling the impact of our new insights for the larger 16-18,000 teu designs now emerging and, looking to possibilities in future, for next generation 22,000 + teu ships.

The results have been really interesting and positive. In some locations, in some designs, you may have to reduce container weights. But having satisfied ourselves the risks are managed there are big benefits in overall carrying capacity. It’s not about more container slots – it’s about being able to load more containers that are carrying cargo and being able to have more options as to where to load which can help speed up cargo operations, reducing time in port, energy used and driving increasing asset efficiency ashore and afloat. 
The larger the ship, the bigger the benefit as the efficiencies are scaleable. The next steps towards final confirmation and the ability to offer new rules will go for validation by the Lloyd’s Register Technical Committee in November.

We have some really smart people who are working on this project and others like it that can help shipowners make some smart decisions. These latest findings are important and support the approach that we can make considerable savings through innovative research and a greater understanding of operational requirements and realities. Anyone looking at big container ships will benefit from this work.
There is still more work to be done. But we will be changing our rules and hope to bring this into practice soon."

Maritime Reporter February 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

China's Maritime Advances Worry US

The Director of U.S. National Intelligence, James Clapper, has expressed his concern at the progress of China in maritime zones it shares with its neighbors, accused

Davie Building LNG-powered Ferries

Canadian shipbuilder Davie held a keel laying ceremony for MV Armand-Imbeau II, marking the beginning of the hull assembly for this first of two sisterships under

Keppel FELS to Deliver 100th Jackup Rig

Keppel FELS, a wholly owned subsidiary of Keppel Offshore & Marine (Keppel O&M) is on track to deliver PV Drilling VI, a KFELS B Class jackup rig, to PV Drilling Overseas (PVDO),

Container Ships

Container Ship Runs Aground at Fremantle Port

A ship that ran aground at Fremantle Port early Saturday has been refloated. The 62,000-tonne Denmark-registered container ship Maersk Garonne became stuck in soft sand about 500m off South Mole.

Jinhui Shipping Plummets to Loss

Norway listed dry bulk shipper Jinhui Shipping said the tough market that owners faced last year will become tougher in 2015.   Dry bulk shipping market Environment

Berenberg in $1.1bln Box Bid

The world's second-oldest bank Joh. Berenberg Gossler & Co. KG is lining up a new fund worth EUR 1bn ($1.1bn) for the containership sector.   A report appeared

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Offshore Oil Pipelines Pod Propulsion Salvage Ship Electronics Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1246 sec (8 req/sec)